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| author |   Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 12:17:53 -0700 |
|---|---|---|
| committer | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 15:44:42 -0700 |
| commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
| tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/arch/metag/lib/cmpdi2.S | |
| parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) | |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/arch/metag/lib/cmpdi2.S')
| -rw-r--r-- | kernel/arch/metag/lib/cmpdi2.S | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/kernel/arch/metag/lib/cmpdi2.S b/kernel/arch/metag/lib/cmpdi2.S new file mode 100644 index 000000000..9c5c663c5 --- /dev/null +++ b/kernel/arch/metag/lib/cmpdi2.S @@ -0,0 +1,32 @@ +! Copyright (C) 2012 by Imagination Technologies Ltd. +! +! 64-bit signed compare routine. +! + + .text + .global ___cmpdi2 + .type ___cmpdi2,function + +! low high +! s64 a (D0Ar2, D1Ar1) +! s64 b (D0Ar4, D1Ar3) +___cmpdi2: + ! start at 1 (equal) and conditionally increment or decrement + MOV D0Re0,#1 + + ! high words differ? + CMP D1Ar1,D1Ar3 + BNE $Lhigh_differ + + ! unsigned compare low words + CMP D0Ar2,D0Ar4 + SUBLO D0Re0,D0Re0,#1 + ADDHI D0Re0,D0Re0,#1 + MOV PC,D1RtP + +$Lhigh_differ: + ! signed compare high words + SUBLT D0Re0,D0Re0,#1 + ADDGT D0Re0,D0Re0,#1 + MOV PC,D1RtP + .size ___cmpdi2,.-___cmpdi2 |